We divide 91218591 by 303
We want to figure out the number of times 91218591 can be divided by 303.

Advancing to step 1:
The number 303 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 303

Going ahead to step 2:
If we divide 91 by 303, we get 0 and a remainder of 91.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 91, we get 91.
Take the next digit (2) from the dividend and append it to 91, then repeat: 912 / 303

Moving on to step 3:
303 goes into 912 3 times with a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 909 from 912 to get 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 303

Step 4:
When dividing 31 by 303, we get 0 with a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 30.0
Subtracting 0 from 31 leaves us with 31.
Fetch the next digit (8) from the dividend, attach it to 31 and continue: 318 / 303

Step 5:
The number 303 fits into 318 1 times, leaving a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 301.0
If we subtract 303 from 318, we get 15.
Take the next digit (5) from the dividend and append it to 15, then repeat: 155 / 303

Step 6:
303 can be fit into 155 0 times, resulting in a remainder of 155.
The number 0 becomes the next digit in our result. 
Result so far: 3010.0
Deduct 0 from 155 and we're left with 155.
Include the next digit (9) from the dividend after 155, then repeat: 1559 / 303

Step 7:
303 goes into 1559 5 times with a remainder of 44.
Use 5 as the next digit of our solution. 
Result so far: 30105.0
If we subtract 1515 from 1559, we get 44.
Bring next digit (1) of the dividend behind the 44 and repeat the process: 441 / 303

Step 8:
303 goes into 441 1 times with a remainder of 138.
The next digit of our result is 1. 
Result so far: 301051.0
If we take 303 away from 441, we end up with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Moving on to step 9:
If we divide 1380 by 303, we get 4 and a remainder of 168.
Use 4 as the next digit of our solution. 
Result so far: 301051.4
Subtracting 1212 from 1380 leaves us with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Moving on to step 10:
The number 303 fits into 1680 5 times, leaving a remainder of 165.
Put 5 as the next digit of the answer. 
Result so far: 301051.45
Subtracting 1515 from 1680 leaves us with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Advancing to step 11:
1650 divided by 303 is 5 with a remainder of 135.
Record the quotient 5 as the next digit in the result. 
Result so far: 301051.455
Subtract 1515 from 1650 to get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Our division results in 301051.455 with a remaining 0.0135.